Fabric-clamp



R. W. BIUDLE-COIVI.

FABRIC CLAMP.

APPLICATION FILED DEC. I6.,I919.

PatentedvAvug. 31, 1920.

I nave/17] 01".'

ROY W. BIDDLECOM, or Losaixenines,VA catiromiia, AssrGNOB, ro

Y Los ANGELES, CALIFORNIA.

fr A21 FABRIC-CLAMP.

To lfwwmrz't may Concern.' y Be it known that L ROY W. LBDDLEQONI,l a

citizen of the UnitedStates, residing at Losl ngeles, intlie county of Los ngeles and State of California, have invented -a new and useful Fabric-Clamp, of whichthe fol-` lowing is a specification. j Y

This invention relates to a device for holding fabi-ic when the latter is stretched under' tension. f

An object .of this invention is to provide a fabric clamp which will effect a tight and certain grip upon the edge of a fabric which grip will 'withstand without loosening` an unlimited amount of pull upon the fabric.

Particularly my invention pertains to the provision of means'for effectively securing the edges of tightly stretchedy fabric to the frame withinv which the fabric vis stretched. For example, my invention is adapted for application to the fabricv holding frames utilized in the manufacture of window shade l Y Y toward vthe body ofthe st'ripv untilthe o p-V Y posed flat faces of said strips are closely adcloth. I 1

:fi further object of my invention is to provide a clamp of the character referred to which will be simple and rapid in' operation.

Another object of my invention is'to provide such a clamp which will be of few parts and nonexpensive in manufacture.

Further objects and advantages will appear from the subj oined detailed 'description. Y

The accompanying drawings illustrate the invention. Y A

Figure 1 is a view illustrating a fabric secured to a frame member by means ofmy novel clamp. Y

Fig. 2 is a vertical section ofthe same taken on a line indicated by :U2-m2 in Fig. 1; A

llatching means to secure the strip 7 in clampingposition and insure against acci- Fig. 3 is a front elevation of one'of the rectangular strip membersA included in my invention.

Fig. 4 .is a front elevation of the other of latchingmeans is not absolutely necessary as the tension'upon the fabric9 when it is sion 4. preferably projects from the body ofv the strip 3 at an angle slightly more acute than a rightvangle and the extension 5 is 7 is then interiitted lover :said fabric andv within the groove .6 during which operation the body ofthe strip' 7 will reach a position substantially perpendicular to the body of the strip 3, and the jfabric kwill bel pushedk within the groove G.

The body of the strip 7is thenV revolved' jacent and substantially yparallel each other, asillustr'ated in Fig. 2.' During such move- Sjpecicationiof Letters Patent. VPafgeljl'eidg"lj ';11f0l.' 31, 19210 l, Application fii'ekijnecember 1e, ieia seriaino. 345,374.

ment of the strip 7 the apex of the angle formed by the body of the strip 7 and the tongue 8 will act as a fulcrum and will be pivotedwithin the apex-of theangle formed by the'body of the strip '3 and theeXtension v4. The fabric. 9 willthus be gripped be`- tween such fulcruin and the line upon which it pivots. Furthermore, when thestrip 7 has i reached the vposition indicated,the eXtreme f'longitudinal edgeof the tongueV 8 will bind the fabric tothe doubled back extension 5 providing a second line of gripV for the same. 1n practice I find it convenient lto provide dental displacementof the same due tojolting or other causes. In fact, however,l such stretched will have a tendencyto tighten "the grip of the tongue and groove arrangement Vby pulling' upon the longitudinal edge of the lip 8 and will therefore cause the body l j of the strip 7 to remain adjacent the body of the strip 3 as desired. In'the drawings a preferred forni of latching means is indicated as comprising levers pivoted at 11" to .the framemember 1. l Y.

I have found thatthe fabric clamp comprising my invention Will grip a fabric so` simplicity of my fabric clamp both in oper-H. A, ation Aand construction isa Wide advance over and departure from everythin'gprior in V the art. .y r My invention is not limitedto any particular proportions or form of parts, but is of the scope .set forth in the following claims. Y

Il claim: Y n r l. A fabric'clamp comprising a strip having one longitudinalV edge bent and doubled back to forma groove and a second strip having one longitudinal edge bent to form an angular tongue, said tongue interlitting `Within said groove to grip a fabric. interposed between said strips.

2. A fabric clamp comprising a fixed strip having one longitudinal edge bent and doubled back to forma groove, and a detachable strip having'one longitudinal edge Vbent at an acute angle to form a tongue, said tongue. intertting Within said groove and of the angle formedl at Vthejuncture of said detachable strip and said tongue to grip a fabric interposed between said'strips.

l 3. 'A fabric clamp comprising a pair of` strips having edges shapedto form a longitudnally yextending tongue 'and groove adapted to grip a V,fabric interposed Vtherein when said Vtongue isy interfitted `Within said groove and said strips are Vpositioned with their fiat .meeting faces adjacent and substantially parallel each other.

l. A fabric clampr comprising a pairY of strips having edgesshvapedto form 'al longitudinally extending' tongue and groove, the tongue contacting' at two points Within the groove to grip a fabric interposed therein, and means to secure said strips with their flat meeting faces adjacent and substantially parallel each other. A

Signed at Los Angeles, California, this 5th d ay of December, 1919.

ROY W. BIDDLEGOM. Vitnesses:

LnoNARD S. LYON, L. BELLE YEAVER. 

